/*!
 * \file pop3.c
 *
 * \brief 共通定义
 *
 * All Rights Reserved Copyright (C) 2014 broada,Co.,Ltd.\n
 * 共通使用的宏和结构体test
 *
 * \version 1.0
 * \author jikw
 * \date 2015/05/05
 *
 */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "config.h"
#include "frct_comm.h"
#include "frreport_comm.h"
#include "frservice_comm.h"
#include "pop3.h"

extern void *g_p_apm_context;

typedef struct __st_L7session_pop3_private
{
    unsigned long ul_seq;                   //序列号，1次req和response时，使用同一个序列号
    L4_transaction st_l4_trans;             //数据
    L7_transaction st_l7_trans;             //数据
    int i_flag_data_type;                   //1: FRLOGIN_START 2:FRLOGIN_SUCC 3:FRLOGIN_FAIL 4 FRLOGOUT_START 5 FRLOGOUT_END 0 : other
    char *p_header_name;
    Frreport_body_data *p_st_body_data_req;
    Frreport_body_data *p_st_body_data_resp;
    Frlist_header *p_lst_comm;
    Frlist_header *p_lst_req;
    char *p_user_name;
    struct timeval st_login_timestamp;
    char arr_session_id[APM_UUID_SIZE];
    int i_sign;                             //标志位 0||1, 0:需要resp解析 1:不需要resp解析
    int i_flag_end;                         //标志位 0||1, 0:req为PASS 1:req不为PASS
    int i_flag_response;                    //标志位 0||1, 0:response的code和string不必上报 1：需要上报
}L7session_pop3_private;

/*
 * pop3私有数据创建
 *
 * \param void
 *
 * \return NULL          内存分配失败\n
 *         p_st_private  内存分配成功
 *
 * \note
 *
 */
FR_STATIC L7session_pop3_private* __pop3_private_create(void)
{
    L7session_pop3_private *p_st_private = NULL;

    p_st_private = (L7session_pop3_private*)frmalloc(sizeof(L7session_pop3_private));
    if (p_st_private == NULL)
        return NULL;

    memset(p_st_private, 0x00, sizeof(L7session_pop3_private));
    return p_st_private;
}

/*!
 * 私有信息重置
 *
 * \param p_private_session  (pop3的私有session数据)
 *
 * \return FR_SUCC   成功\n
 *
 * \note
 *
 */
FR_STATIC int __pop3_session_reset(void *p_private_session)
{
    L7session_pop3_private *p_st_private = (L7session_pop3_private*)p_private_session;
    if (p_st_private)
    {
        if (p_st_private->p_st_body_data_req)
            frreport_body_free(&p_st_private->p_st_body_data_req);

        if (p_st_private->p_st_body_data_resp)
            frreport_body_free(&p_st_private->p_st_body_data_resp);

        if (p_st_private->p_lst_req)
            frreport_body_l7list_free(&p_st_private->p_lst_req);

        if (p_st_private->p_lst_comm)
            frreport_body_l7list_free(&p_st_private->p_lst_comm);

        if (p_st_private->p_header_name)
        {
            frfree(p_st_private->p_header_name);
            p_st_private->p_header_name = NULL;
        }

        memset(&p_st_private->st_l4_trans, 0x00, sizeof(L4_transaction));
        p_st_private->i_flag_data_type = 0;
        p_st_private->i_sign = 0;
        p_st_private->i_flag_end = 0;
        p_st_private->i_flag_response = 0;

    }
    return FR_SUCC;
}

/*!
 * 判断是否是pop3协议
 *
 * \param p_st_conn      (输入数据信息)
 * \param p_st_packet    (输入数据)
 *
 * \return APM_L7_IS_YES  属于pop3协议\n
 *         APM_L7_IS_NO   不属于pop3协议
 *
 * \note
 *
 */
int pop3_detect(Conntrack *p_st_conn, Apm_packet *p_st_packet)
{
    int i_ret = 0;
    int i_ret_fun = 0;

    if (p_st_packet == NULL || p_st_packet->p_payload == NULL || p_st_packet->ui_payload_len <= 2
       || p_st_conn==NULL)
        return APM_L7_IS_NO;

    if (strncmp(p_st_packet->p_payload, "+OK ", 4) != 0 && strncmp(p_st_packet->p_payload, "-ERR ", 5) != 0)
        goto ERROR;

    if (strncmp(p_st_packet->p_payload+p_st_packet->ui_payload_len-2, "\r\n", 2)!=0)
        goto ERROR;

    i_ret_fun = frct_get_direct_known(p_st_conn);
    if (i_ret_fun == FR_DIRECT_UNKNOWN)
        frcap_set_cs_srv(p_st_conn, p_st_packet->src_ip, p_st_packet->src_port);

    frservice_add(g_p_apm_context, MODULE_L7PROTO, p_st_packet->src_ip, p_st_packet->src_port, NULL, 0);
    return APM_L7_IS_YES;

ERROR:
    if (frct_get_direct_known(p_st_conn) == FR_DIRECT_UNKNOWN)
    {
        i_ret = frservice_get(g_p_apm_context, MODULE_L7PROTO, p_st_packet->dst_ip, p_st_packet->dst_port, NULL, 0, NULL);
        if (i_ret == FR_SUCC)
        {
            frcap_set_cs_srv(p_st_conn, p_st_packet->dst_ip, p_st_packet->dst_port);
            return APM_L7_IS_YES;
        }
        i_ret = frservice_get(g_p_apm_context, MODULE_L7PROTO, p_st_packet->src_ip, p_st_packet->src_port, NULL, 0, NULL);
        if (i_ret == FR_SUCC)
        {
            frcap_set_cs_srv(p_st_conn, p_st_packet->src_ip, p_st_packet->src_port);
            return APM_L7_IS_YES;
        }
    }
    else
    {
        i_ret = frservice_get(g_p_apm_context, MODULE_L7PROTO, p_st_packet->dst_ip, p_st_packet->dst_port, NULL, 0, NULL);
        if (i_ret == FR_SUCC)
            return APM_L7_IS_YES;

        i_ret = frservice_get(g_p_apm_context, MODULE_L7PROTO, p_st_packet->src_ip, p_st_packet->src_port, NULL, 0, NULL);
        if (i_ret == FR_SUCC)
            return APM_L7_IS_YES;
    }
    return APM_L7_IS_NO;
}

/*!
 * req数据解析
 *
 * \param p_packet        (req数据)
 * \param p_st_private    (私有数据)
 * \param p_st_body_data
 * \param p_st_conn       (入力链接信息)
 *
 * \return APM_L7_ANALYZE_SUCC   成功\n
 *         APM_L7_ANALYZE_FAIL   失败
 *         APM_L7_ANALYZE_TODO   未结束
 *
 * \note
 *
 */
FR_STATIC int __req_parse(char *p_data, unsigned int ui_data_len, L7session_pop3_private *p_st_private, Frreport_body_data *p_st_body_data, Conntrack *p_st_conn)
{
    unsigned int ui_len_tmp = 0;
    char *p_name = NULL;
    char *p_value = NULL;
    char *p_pos = NULL;

    if (p_data == NULL || ui_data_len == 0 || p_st_private == NULL || p_st_body_data == NULL || p_st_conn == NULL)
        return APM_L7_ANALYZE_FAIL;

    //st_req_list
    if (strncmp(p_data, "PASS ", 5) == 0)
    {
        p_st_private->i_flag_response = 1;
        p_st_private->i_flag_end = 1;
        return APM_L7_ANALYZE_TODO;
    }

    p_pos = (char*)memchr(p_data, ' ', ui_data_len);
    if (p_pos == NULL)
    {
        p_name = (char*)frmalloc(ui_data_len-1);
        if (p_name == NULL)
            goto ERROR;
        snprintf(p_name,ui_data_len-1, "%s", p_data);

        if (strncasecmp(p_name, "QUIT", 4) == 0)
        	  p_st_private->i_flag_data_type = 4;
        if (strncasecmp(p_name, "STAT", 4) == 0 || strncasecmp(p_name, "UIDL", 4) == 0 ||strncasecmp(p_name, "LIST", 4) == 0 || strncasecmp(p_name, "QUIT", 4) == 0)
        {
        p_st_private->i_flag_response = 1;
        if (frreport_body_l7_add_str(p_st_body_data, APM_REPORT_KEY_TRANS_TITLE, p_name) == FR_FAIL)
            goto ERROR;
        if (frreport_body_l7_add_str(p_st_body_data, "request.pop3.cmd", p_name) == FR_FAIL)
            goto ERROR;
        }

        frfree(p_name);
        p_name = NULL;
        return APM_L7_ANALYZE_SET_REQ(APM_L7_ANALYZE_SUCC);
    }
    else
    {
        ui_len_tmp = p_pos - p_data + 1;
        p_name = (char*)frmalloc(ui_len_tmp);
        if (p_name == NULL)
            goto ERROR;
        snprintf(p_name,ui_len_tmp, "%s", p_data);

        if (strncasecmp(p_name, "USER", 4) == 0)
        {
            p_st_private->i_flag_response = 1;
            if (frreport_body_l7_add_str(p_st_body_data, APM_REPORT_KEY_TRANS_TITLE, "USER") == FR_FAIL)
                goto ERROR;
            if (frreport_body_l7_add_str(p_st_body_data, "request.pop3.cmd", "USER") == FR_FAIL)
                goto ERROR;
            frfree(p_name);
            p_name = NULL;
            p_st_private->i_flag_data_type = 1;
            fruuid(p_st_private->arr_session_id);

            ui_len_tmp = ui_data_len - ui_len_tmp - 1;
            p_value = (char*)frmalloc(ui_len_tmp);
            snprintf(p_value, ui_len_tmp, "%s", p_data+5);
            if (p_value == NULL)
                goto ERROR;
            if (p_st_private->p_user_name)
                frfree(p_st_private->p_user_name);
            p_st_private->p_user_name = p_value;
            p_value = NULL;

            p_st_private->st_login_timestamp.tv_sec = p_st_private->st_l4_trans.st_request_time_first_byte.tv_sec;
            p_st_private->st_login_timestamp.tv_usec = p_st_private->st_l4_trans.st_request_time_first_byte.tv_usec;

            return APM_L7_ANALYZE_SET_REQ(APM_L7_ANALYZE_SUCC);
        }
        if (strncasecmp(p_name, "RETR", 4)==0 || strncasecmp(p_name, "DELE", 4)==0 ||strncasecmp(p_name, "TOP", 3)==0
             ||strncasecmp(p_name, "UIDL", 4)==0 || strncasecmp(p_name, "LIST", 4)==0)
        {
            p_st_private->i_flag_response = 1;
            if (frreport_body_l7_add_str(p_st_body_data, APM_REPORT_KEY_TRANS_TITLE, p_name) == FR_FAIL)
                goto ERROR;
            if (frreport_body_l7_add_str(p_st_body_data, "request.pop3.cmd", p_name) == FR_FAIL)
                goto ERROR;
        }
        frfree(p_name);
        p_name = NULL;
    }

    return APM_L7_ANALYZE_SET_REQ(APM_L7_ANALYZE_SUCC);

ERROR:
    if (p_name)
        frfree(p_name);

    return APM_L7_ANALYZE_FAIL;

}

/*!
 * resp数据解析
 *
 * \param p_packet        (resp数据)
 * \param p_st_private    (私有数据)
 * \param p_st_body_data
 * \param p_st_conn       (入力链接信息)
 *
 * \return APM_L7_ANALYZE_SUCC   成功\n
 *         APM_L7_ANALYZE_FAIL   失败\n
 *         APM_L7_ANALYZE_TODO   未结束
 *
 * \note
 *
 */
FR_STATIC int __resp_parse(char *p_data, unsigned int ui_data_len, L7session_pop3_private *p_st_private, Frreport_body_data *p_st_body_data, Conntrack *p_st_conn)
{
    unsigned int ui_len_tmp = 0;
    char *p_pos = NULL;
    char *p_header_value = NULL;
    L7_transaction *p_st_l7_trans = NULL;

    if (p_data == NULL || ui_data_len == 0 || p_st_private == NULL || p_st_body_data == NULL || p_st_conn == NULL)
        return APM_L7_ANALYZE_FAIL;

    if (strncmp(p_data, "+OK", 3) != 0 && strncmp(p_data, "-ERR", 4) != 0 )
    {
        return APM_L7_ANALYZE_FAIL;
    }

    p_st_l7_trans = &p_st_private->st_l7_trans;
    if (strncmp(p_data, "+OK", 3) == 0)
        p_st_l7_trans->l_response_code = 0;
    else if (strncmp(p_data, "-ERR", 4) == 0)
        p_st_l7_trans->l_response_code = -1;

    //判断是否为session数据
    if ((strncmp(p_data, "+OK", ui_data_len-2)) == 0)
        p_st_private->i_flag_data_type = 5;
    if (p_st_private->i_flag_end == 1)
    {
        if ((strncmp(p_data, "+OK ", 4)) == 0)
            p_st_private->i_flag_data_type = 2;
        else
            p_st_private->i_flag_data_type = 3;
    }

    if (p_st_private->i_flag_data_type == 1)
    {
    	  if (strncmp(p_data, "-ERR", 4) == 0)
    	      p_st_private->i_flag_data_type = 3;
    	  else
            return APM_L7_ANALYZE_TODO;
    }

    if (p_st_private->i_flag_response == 0)
    {
        p_st_private->i_sign = 1;
        return APM_L7_ANALYZE_SET_RESP(APM_L7_ANALYZE_SUCC);
    }

    p_pos = (char*)memchr(p_data, '\r', ui_data_len);
    if ( *(p_pos+1) == '\n')
    {
        ui_len_tmp = p_pos - p_data + 1;
        p_header_value = (char*)frmalloc(ui_len_tmp);
        if (p_header_value == NULL)
            goto ERROR;
        snprintf(p_header_value,ui_len_tmp,"%s",p_data);
        //设置节点内容
        if (frreport_body_l7_add_int(p_st_body_data, APM_REPORT_KEY_RESP_CODE, p_st_l7_trans->l_response_code) == FR_FAIL)
            goto ERROR;
        if (frreport_body_l7_add_str(p_st_body_data, APM_REPORT_KEY_RESP_CODE_STRING, p_header_value) == FR_FAIL)
            goto ERROR;
        frfree(p_header_value);
        p_header_value = NULL;

        p_st_private->i_sign = 1;
        return APM_L7_ANALYZE_SET_RESP(APM_L7_ANALYZE_SUCC);
    }
    else
       return APM_L7_ANALYZE_FAIL;

ERROR:
    if (p_header_value)
        frfree(p_header_value);

    return APM_L7_ANALYZE_FAIL;
}

/*!
 * pop3的session数据上报
 *
 * \param p_st_body_data       (入力链接信息)
 * \param p_st_private         (入力packet信息)
 *
 * \return FR_SUCC   成功\n
 *         FR_FAIL   失败
 *
 * \note
 *
 */
FR_STATIC int __pop3_session_report(Frreport_body_data *p_st_body_data, L7session_pop3_private *p_st_private)
{
    if (p_st_body_data == NULL || p_st_private == NULL)
        return FR_FAIL;

    if (frreport_body_l7_add_str(p_st_body_data, APM_REPORT_KEY_SESSION_USERNAME, p_st_private->p_user_name) == FR_FAIL)
        return FR_FAIL;

    if (frreport_body_l7_add_str(p_st_body_data, APM_REPORT_KEY_SESSION_ID, p_st_private->arr_session_id) == FR_FAIL)
        return FR_FAIL;

    if (frreport_body_l7_add_timeval(p_st_body_data, APM_REPORT_KEY_SESSION_LOGIN_TIMESTAMP, &p_st_private->st_login_timestamp) == FR_FAIL)
        return FR_FAIL;

    return FR_SUCC;
}

/*!
 * pop3的packet解析
 *
 * \param p_st_conn             (入力链接信息)
 * \param p_st_packet           (入力packet信息)
 * \param p_st_hash_report      (保存Frreport_data)
 * \param p_st_session          (私有数据)
 *
 * \return APM_L7_ANALYZE_SUCC   成功\n
 *         APM_L7_ANALYZE_FAIL   失败
 *         APM_L7_ANALYZE_TODO   数据未结束
 *
 * \note
 *
 */
FR_STATIC int __req_data_analysis(Conntrack *p_st_conn
                                 , Apm_packet *p_st_packet
                                 , Frhash_header *p_st_hash_report
                                 , L7_session *p_st_session)
{
    int i_ret = 0;
    L7session_pop3_private *p_st_private = NULL;
    L4_transaction *p_st_l4_trans = NULL;
    Frreport_data *p_st_report_data = NULL;
    unsigned long ul_tmp = 0;

    if (p_st_conn == NULL || p_st_packet == NULL || p_st_hash_report == NULL || p_st_session == NULL)
        return APM_L7_ANALYZE_FAIL;

    p_st_private = (L7session_pop3_private*)p_st_session->p_session_private;
    p_st_l4_trans = &(p_st_private->st_l4_trans);

    //如果连续的两个request
    if (p_st_private->p_lst_comm)
        __pop3_session_reset((void *)(p_st_private));

    //创建数据链表
    if (p_st_private->p_st_body_data_req == NULL)
    {
        p_st_private->p_st_body_data_req = frreport_body_new_l7(p_st_conn);
        if (p_st_private->p_st_body_data_req == NULL)
            goto ERROR;

        if (frreport_body_l7_add_connInfo(p_st_private->p_st_body_data_req, p_st_conn) == FR_FAIL)
            goto ERROR;

        //seq ++
        p_st_private->ul_seq = frct_seq_increase(p_st_conn);

        //st_request_time_first_byte
        p_st_l4_trans->st_request_time_first_byte.tv_sec = p_st_packet->st_timestamp.tv_sec;
        p_st_l4_trans->st_request_time_first_byte.tv_usec = p_st_packet->st_timestamp.tv_usec;
    }

    //请求的字节数
    p_st_l4_trans->l_request_bytes += p_st_packet->ui_payload_len;

    //req解析
    i_ret = __req_parse(p_st_packet->p_payload, p_st_packet->ui_payload_len, p_st_private, p_st_private->p_st_body_data_req, p_st_conn);
    if (i_ret == APM_L7_ANALYZE_FAIL || p_st_private->i_flag_response==0)
    {
        frreport_body_free(&p_st_private->p_st_body_data_req);
        return i_ret;
    }
    if (i_ret == APM_L7_ANALYZE_TODO)
        return i_ret;

    if (frreport_body_l7_add_ulong(p_st_private->p_st_body_data_req, APM_REPORT_KEY_REQ_ID, p_st_private->ul_seq) == FR_FAIL)
        goto ERROR;

    //ResponseRequired
    if (frreport_body_l7_add_int(p_st_private->p_st_body_data_req, APM_REPORT_KEY_REQ_ISRESPREQUIRED, 1) == FR_FAIL)
        goto ERROR;

    //start time
    if (frreport_body_l7_add_timeval(p_st_private->p_st_body_data_req, APM_REPORT_KEY_REQ_START_TIMESTAMP, &p_st_l4_trans->st_request_time_first_byte) == FR_FAIL)
        goto ERROR;

    //st_request_time
    p_st_l4_trans->st_request_time.tv_sec = p_st_packet->st_timestamp.tv_sec;
    p_st_l4_trans->st_request_time.tv_usec = p_st_packet->st_timestamp.tv_usec;

    ul_tmp = frtime_diff(&(p_st_l4_trans->st_request_time_first_byte), &(p_st_l4_trans->st_request_time));
    //send_time_us
    if (frreport_body_l7_add_long(p_st_private->p_st_body_data_req, APM_REPORT_KEY_REQ_SEND_TIME_US, ul_tmp) == FR_FAIL)
        goto ERROR;

    //end time
    if (frreport_body_l7_add_timeval(p_st_private->p_st_body_data_req, APM_REPORT_KEY_REQ_END_TIMESTAMP, &p_st_l4_trans->st_request_time) == FR_FAIL)
        goto ERROR;

    //request bytes
    if (frreport_body_l7_add_long(p_st_private->p_st_body_data_req, APM_REPORT_KEY_REQ_DATA_BYTES, p_st_packet->ui_payload_len) == FR_FAIL)
        goto ERROR;

    if (p_st_private->p_user_name)
    {
        if (__pop3_session_report(p_st_private->p_st_body_data_req, p_st_private) == FR_FAIL)
            goto ERROR;
    }

    p_st_report_data = frreport_data_l7_new(FRREPORT_TYPE_L7DATA_REQ);
    if (p_st_report_data == NULL)
        goto ERROR;

    //拷贝相关链表
    p_st_private->p_lst_comm = FRREPORT_BODY_L7LIST_CLONE_COMM(p_st_private->p_st_body_data_req);
    if (p_st_private->p_lst_comm == NULL)
        goto ERROR;
    p_st_private->p_lst_req = FRREPORT_BODY_L7LIST_CLONE_REQ(p_st_private->p_st_body_data_req);
    if (p_st_private->p_lst_req == NULL)
        goto ERROR;

    if (frreport_data_add_body(p_st_report_data, p_st_private->p_st_body_data_req) == FR_FAIL)
        goto ERROR;
    p_st_private->p_st_body_data_req = NULL;

    if (frreport_data_hash(p_st_hash_report, p_st_report_data) == FR_FAIL)
        goto ERROR;
    p_st_report_data = NULL;

    return i_ret;

ERROR:
    if (p_st_report_data)
        frreport_data_free(&p_st_report_data);
    __pop3_session_reset((void *)(p_st_private));
    return APM_L7_ANALYZE_FAIL;
}

/*!
 * 判断数据是否结束
 *
 * \param p_payload       (入力链接信息)
 * \param ui_payload_len  (入力packet信息)
 *
 * \return 1  成功\n
 *         0  失败
 *
 * \note
 *
 */
FR_STATIC int __ending_judge(char *p_payload, unsigned int ui_payload_len)
{
    if (p_payload == NULL || ui_payload_len == 0)
        return 0;
    char *p_pos = NULL, *p_substr=NULL;
    if (strncmp(p_payload, "+OK", 3) == 0 || strncasecmp(p_payload, "-ERR", 4) == 0 )
    {
        p_pos = (char*)memchr(p_payload, '\r', ui_payload_len);
        if (p_pos + 2 - p_payload == ui_payload_len)
            return 1;
    }
    p_substr = (char*)"\r\n.\r\n";
    p_pos = frmemstr(p_payload, ui_payload_len, p_substr, strlen(p_substr));
    if (p_pos == NULL)
        return 0;
    else
    {
        p_substr = (char*)"\r\n\r\n.\r\n";
        if ( frmemstr(p_payload, ui_payload_len, p_substr, strlen(p_substr)) )
            return 1;
        if (p_pos + 5 - p_payload == ui_payload_len)
            return 1;
        return 0;
    }
}

/*!
 * pop3的packet解析
 *
 * \param p_st_conn             (入力链接信息)
 * \param p_st_packet           (入力packet信息)
 * \param p_st_hash_report      (保存Frreport_data)
 * \param p_st_session          (私有数据)
 *
 * \return APM_L7_ANALYZE_SUCC   成功\n
 *         APM_L7_ANALYZE_FAIL   失败
 *         APM_L7_ANALYZE_TODO   数据未结束
 *
 * \note
 *
 */
FR_STATIC int __resp_data_analysis(Conntrack *p_st_conn
                                 , Apm_packet *p_st_packet
                                 , Frhash_header *p_st_hash_report
                                 , L7_session *p_st_session)
{
    int i_ret = 0;
    L7session_pop3_private *p_st_private = NULL;
    L4_transaction *p_st_l4_trans = NULL;
    unsigned long ul_tmp = 0;
    Frreport_data* p_st_report_data = NULL;

    if (p_st_conn == NULL || p_st_packet == NULL
        || p_st_hash_report == NULL || p_st_session == NULL)
        return APM_L7_ANALYZE_FAIL;

    p_st_private = (L7session_pop3_private*)p_st_session->p_session_private;
    p_st_l4_trans = &(p_st_private->st_l4_trans);

    if (p_st_private->i_flag_response == 0)
        return APM_L7_ANALYZE_SET_RESP(APM_L7_ANALYZE_SUCC);

    if (p_st_l4_trans->st_response_time_first_byte.tv_sec == 0 && p_st_l4_trans->st_response_time_first_byte.tv_usec == 0)
    {
        //创建数据链表
        p_st_private->p_st_body_data_resp = frreport_body_new_l7(p_st_conn);
        if (p_st_private->p_st_body_data_resp == NULL)
            goto ERROR;

        if (p_st_l4_trans->st_request_time_first_byte.tv_sec != 0)
        {
            FRREPORT_BODY_L7LIST_SET_REQ(p_st_private->p_st_body_data_resp, &p_st_private->p_lst_req);
            FRREPORT_BODY_L7LIST_SET_COMM(p_st_private->p_st_body_data_resp, &p_st_private->p_lst_comm);
        }
        else
        {
            if (frreport_body_l7_add_connInfo(p_st_private->p_st_body_data_resp, p_st_conn) == FR_FAIL)
                goto ERROR;
        }

        p_st_l4_trans->st_response_time_first_byte.tv_sec = p_st_packet->st_timestamp.tv_sec;
        p_st_l4_trans->st_response_time_first_byte.tv_usec = p_st_packet->st_timestamp.tv_usec;

        //start time
        if (frreport_body_l7_add_timeval(p_st_private->p_st_body_data_resp, APM_REPORT_KEY_RESP_START_TIMESTAMP, &p_st_l4_trans->st_response_time_first_byte) == FR_FAIL)
            goto ERROR;

        if (p_st_l4_trans->st_request_time.tv_sec != 0 || p_st_l4_trans->st_request_time.tv_usec != 0)
        {
            //server time
            ul_tmp = frtime_diff(&(p_st_l4_trans->st_request_time), &(p_st_l4_trans->st_response_time_first_byte));
            if (frreport_body_l7_add_ulong(p_st_private->p_st_body_data_resp, APM_REPORT_KEY_RESP_SERVER_TIME_US, ul_tmp) == FR_FAIL)
                goto ERROR;
        }
        else
        {
            //如果不是第一个响应信息  并且没有req数据包  直接返回
            if (frmemstr(p_st_packet->p_payload, p_st_packet->ui_payload_len, (char*)"server ready", 12) == NULL)
            {
                frreport_body_free(&p_st_private->p_st_body_data_resp);
                return APM_L7_ANALYZE_SET_RESP(APM_L7_ANALYZE_SUCC);
            }

            if (frreport_body_l7_add_ulong(p_st_private->p_st_body_data_resp, APM_REPORT_KEY_RESP_SERVER_TIME_US, 0) == FR_FAIL)
                goto ERROR;
        }
    }

    if (p_st_private->i_sign == 0)
    {
        //resp解析
        i_ret = __resp_parse(p_st_packet->p_payload, p_st_packet->ui_payload_len, p_st_private, p_st_private->p_st_body_data_resp, p_st_conn);
        if (i_ret == APM_L7_ANALYZE_FAIL || i_ret == APM_L7_ANALYZE_TODO)
            return i_ret;
    }

    switch(p_st_private->i_flag_data_type)
    {
        case 2:
		        p_st_report_data = frreport_update_create(p_st_conn, APM_REPORT_UPDATE_LOGON, p_st_private->p_user_name, &p_st_packet->st_timestamp);
		        if (p_st_report_data)
		        {
		            if (frreport_send(g_p_apm_context, &p_st_report_data) == FR_FAIL)
		                goto ERROR;
		        }
		        break;
        case 3:
		        p_st_report_data = frreport_update_create(p_st_conn, APM_REPORT_UPDATE_LOGON_REJECT, p_st_private->p_user_name, &p_st_packet->st_timestamp);
		        if (p_st_report_data)
		        {
		            if (frreport_send(g_p_apm_context, &p_st_report_data) == FR_FAIL)
		                goto ERROR;
		        }
		        break;
        case 5:
		        p_st_report_data = frreport_update_create(p_st_conn, APM_REPORT_UPDATE_LOGOUT, p_st_private->p_user_name, &p_st_packet->st_timestamp);
		        if (p_st_report_data)
		        {
		            if (frreport_send(g_p_apm_context, &p_st_report_data) == FR_FAIL)
		                goto ERROR;
		        }
		        break;
        default:
            break;
    }

    //数据上报
    if (__ending_judge(p_st_packet->p_payload, p_st_packet->ui_payload_len))
    {
        //st_response_time
		p_st_l4_trans->st_response_time.tv_sec = p_st_packet->st_timestamp.tv_sec;
		p_st_l4_trans->st_response_time.tv_usec = p_st_packet->st_timestamp.tv_usec;

		//请求的字节数
		p_st_l4_trans->l_response_bytes += p_st_packet->ui_payload_len;
        if (frreport_body_l7_add_long(p_st_private->p_st_body_data_resp, APM_REPORT_KEY_RESP_DATA_BYTES, p_st_l4_trans->l_response_bytes) == FR_FAIL)
            goto ERROR;

        //down load time
        ul_tmp = frtime_diff(&(p_st_l4_trans->st_response_time_first_byte), &(p_st_l4_trans->st_response_time));
        if (frreport_body_l7_add_long(p_st_private->p_st_body_data_resp, APM_REPORT_KEY_RESP_DOWNLOAD_TIME_US, ul_tmp) == FR_FAIL)
            goto ERROR;

        //end time
        if (frreport_body_l7_add_timeval(p_st_private->p_st_body_data_resp, APM_REPORT_KEY_RESP_END_TIMESTAMP, &p_st_l4_trans->st_response_time) == FR_FAIL)
            goto ERROR;

        p_st_report_data = frreport_data_l7_new(FRREPORT_TYPE_L7DATA_RESP);
        if (p_st_report_data == NULL)
            goto ERROR;

        if (frreport_data_add_body(p_st_report_data, p_st_private->p_st_body_data_resp) == FR_FAIL)
            goto ERROR;
        p_st_private->p_st_body_data_resp = NULL;

        if (frreport_data_hash(p_st_hash_report, p_st_report_data) == FR_FAIL)
            goto ERROR;
        p_st_report_data = NULL;

        //返回值设置
        i_ret = APM_L7_ANALYZE_SET_RESP(APM_L7_ANALYZE_SUCC);
        switch(p_st_private->i_flag_data_type)
        {
            case ( 2 ):
            case ( 3 ):
                i_ret = APM_L7_ANALYZE_SET_LOGIN(i_ret);
                break;
            case ( 5 ):
                i_ret = APM_L7_ANALYZE_SET_LOGOUT(i_ret);
                break;
            default:
                break;
        }
        __pop3_session_reset((void *)(p_st_private));

        return i_ret;
    }
    return APM_L7_ANALYZE_TODO;

ERROR:
    if (p_st_report_data)
        frreport_data_free(&p_st_report_data);
    __pop3_session_reset((void *)(p_st_private));

    return APM_L7_ANALYZE_FAIL;
}

/*!
 * pop3的packet解析
 *
 * \param p_st_conn             (入力链接信息)
 * \param p_st_packet           (入力packet信息)
 * \param p_st_hash_report      (保存Frreport_data)
 * \param p_st_session          (私有数据)
 *
 * \return APM_L7_ANALYZE_SUCC   成功\n
 *         APM_L7_ANALYZE_FAIL   失败
 *         APM_L7_ANALYZE_TODO   数据未结束
 *
 * \note
 *
 */
int pop3_analysis(Conntrack *p_st_conn
                  , Apm_packet *p_st_packet
                  , Frhash_header *p_st_hash_report)
{
    int i_ret = APM_L7_ANALYZE_SUCC;
    L7_session *p_st_session = NULL;

    if (p_st_conn == NULL || p_st_packet == NULL || p_st_hash_report == NULL)
        return APM_L7_ANALYZE_FAIL;

    //到Conntrack中取得session信息
    p_st_session = frct_get_session(p_st_conn);
    if (p_st_session == NULL)
        return APM_L7_ANALYZE_FAIL;

    //fin syn包销毁私有数据
    if (p_st_packet->em_analyz_cmd == FRANALYZ_CMD_FIN || p_st_packet->em_analyz_cmd == FRANALYZ_CMD_SYN)
    {
        pop3_session_destroy((void *)(p_st_session->p_session_private));
        p_st_session->p_session_private = NULL;
        return APM_L7_ANALYZE_SUCC;
    }

    //p_session_private分配内存
    if (p_st_session->p_session_private == NULL)
    {
        p_st_session->p_session_private = __pop3_private_create();
        //内存分配失败
        if (p_st_session->p_session_private == NULL)
            return APM_L7_ANALYZE_FAIL;
    }

    //request
    if (p_st_packet->i_direction == FR_DIRECT_CLIENT2SRV)
    {
        i_ret = __req_data_analysis(p_st_conn,p_st_packet,p_st_hash_report,p_st_session);
        if (i_ret == APM_L7_ANALYZE_FAIL)
            goto ERROR;

        return i_ret;
    }
    //response
    else
    {
        i_ret = __resp_data_analysis(p_st_conn,p_st_packet,p_st_hash_report, p_st_session);
        if (i_ret == APM_L7_ANALYZE_FAIL)
            goto ERROR;

        return i_ret;
    }

ERROR:
    if (p_st_session->p_session_private)
        pop3_session_destroy(p_st_session->p_session_private);
    p_st_session->p_session_private = NULL;

    return APM_L7_ANALYZE_FAIL;
}

/*!
 * 私有信息销毁
 *
 * \param p_private_session  (pop3的私有session数据)
 *
 * \return FR_SUCC   成功\n
 *
 * \note
 *
 */
int pop3_session_destroy(void *p_private_session)
{
    L7session_pop3_private *p_st_private = (L7session_pop3_private*)p_private_session;

    if (p_st_private)
    {
        if (p_st_private->p_st_body_data_req)
            frreport_body_free(&p_st_private->p_st_body_data_req);

        if (p_st_private->p_st_body_data_resp)
            frreport_body_free(&p_st_private->p_st_body_data_resp);

        if (p_st_private->p_lst_req)
            frreport_body_l7list_free(&p_st_private->p_lst_req);

        if (p_st_private->p_lst_comm)
            frreport_body_l7list_free(&p_st_private->p_lst_comm);

        if (p_st_private->p_header_name)
            frfree(p_st_private->p_header_name);

        if (p_st_private->p_user_name)
            frfree(p_st_private->p_user_name);

        frfree(p_st_private);
    }
    return FR_SUCC;
}
